Plaster-lath.



"53e plained in detail in the following specifica rating the tongues somewhat hack int-o the LA CASSE ,AND JAMES l?. SEXTON, Ol" LOS ANGELES', CALFORNIA, SSIGNCRS E B'TQLH MiNUFACTURING,CGMPANY, 0F LOS ANGELES. CALIFORNIA. A CsLfPRTll. @E CALIFORNIA.

PLASTER-LTH.

simenon of Leners raient ritten-teu new. el., isis. Application filed June 28, i915. Serial No. 36,790.

To allzu/1,0m t may concern.' the face sheets, these depressions beimgr pre'- 55 Be it known that we, HENRY LA @Assn erably circular und spaced at about the diand JAMES l). Seinen, citizens o1 theUnitcd tances illustrated. lhese depressions are Stat-es, residing Los Angeles, in thel comparatively shallow and have sloping; e county of Los Angeles, State of California, sides 1G as illustrated; and at the center of have invented new and useful Improvements each depression there is a' circular opening 60 in Plaster-Lathe, of which 'the following.;r is 17 which is preferably formed in the Inanii speciiicition. ner hereinafter described. Heretofore the This invention relates to certain iinproveopeningr 17 has been formed as an aperture le ments over Patent No. l,l5,593, granted in the bottom of the depression by simply lil 3rd, 19M, to llames P. Sexton, and to striking out the material 'to form an aper- 65 imi'irovemenls to en application rio-pending' ture of suitable size. live now prefer to herewith by the said Sexton being' appliform the opening' l? by splitting the macation Serial No. 36657, liled June 22nd. terial Within the outlines of the opening' into 1915; sind 'the improvements herein specified e plurality of tongues 1.8 which are then relate pnrticulznly to the construction and turned upwardly and slightly outwardly forma-tion ot' the eeinentitrous buttons and from each other, as is clearly shown in Figs. of the facing' sheet in plaster lath or the l, 2 and tthe same time e. bead 19 is like, with the object of producing" a strong formed around the opening", so that a pordureble luth to which pleister may be tion-oi' the material of the lips 18 is taken applied in such manner as to form e perup in this bead, and so that the upper ends manently strong construction. of the tongues are made to stand approxi- 'Fhe details and specific improvements inmately in the plane of the -face of the face volved in this invention are particularly exsheet. rlhis operation is facilitated by sepation, reference heine; had to the accompanybead, as is illustrated at 20 in Figs. 4- and 80 ing; drawings, in which We have illustrated the formation of the bead then taking up preferred forms oi our present invention, some of the length of the tongues (the und in which drevvi,ng,"-- length ol the 'tongue being equivalent to the Figure l is e section ci one form of our radius of the openings 17. except :1s that improved plaster leth, ll 2 is a section length is taken up by the formation of the 85 .showing e double faced form of the same, bead.) Fig.. 3 is a plan ot our improved form of There are several advantages in using the plaster lath, Fig. l is an .enlarged section material which is struck up to form the showingA the Jformation of the facing sheets opening' 17. ln the iirst place, the tongues in detail, and 5 is en enlarged frag'- 18, struck up from this material, form very 90 inentery plan. oi the Seine. effectual reinforcements for the buttons 25 llt will be understood that our improved which are subsequently formed between and construction may be mede either in single around the tongues 18; end the tongues also fl@ eced or double faced form as is illustrated perform avery valuable lfind effective servin Figs. l and 2. ln Fig. .l the oeinentitious ice during the formation of the plaster lath, body i0 is faced by tvvo form members ll as will hereinafter be described. The beads and l2, the facing sheet lll. forming the l@ materially strengthen and stillen the loot- 'front form member beine; constructed es toms of the de4 ressions, as is apparent, and hereinafter described, While the haelt sheet prevent the deformation or displacement of l2 is a. plein liet sheet. ln Fig. 2' we have these bottoms during the formation of the 10( shown both members il and 12a constructed plaster lath. in the saune manner, so as to form a double rlhe preferred method of formation of the laced plaster leth to which plasteipmay be plaster luth involves the placement of the 53@ applied onopposite faces for the formation fece sheet l1 face downtvardly on a. smooth of a, thin double faced partition. liet surface and the application of the cem- 10 The fece sheets il. and 12n are mede es entitious substance 10 over the back of .the shown in detail in the various views. Spaced face sheet, the cementitious substance being depressions or recesses 15 ere formed over of such consistency that it runs to some extent through the openings 17 and the cem entitious substance is then 'pressed or smoothed out to a layer of uniform thickness, with the result that it is pressed through the openings 1T to form the buttons 25 in the configuration shown in the draW- ings. The lips 18 perform several services during Athis process of formation: they reinforce 'the -finished button as hereinbcfore stated; they form a guide through which the cementitious substance is pressed downwardly, thus heilig conducive to the correct and smooth circular formation of the buttons; and they also materially aid in the formation of the button in doretailed or keyshaped section. lt will be noted that the openings 18n between the tongues are widest at their outer ends; and it will be understood that consequently when thecementitious substance flows or is forced through the opening 17 and between the tongues 18 and outwardly through the openings between the tongues, the outward flow Willl take place most largely near the outer ends of the tongues, thereby forming a button of larger diameter' at its outer end than at its inner end. This is an important feature of improvement, as this action, together with the action of flattening the outer end of the button against the smooth flat surface .on

which the plaster lath is formed, forms a button With a sufficiently overhanging outer edge or periphery to make a good dovetail or key-shape for the applied superimposed plaster to set around and form strong and durable mechanical bond. Thus, in this improved form of plaster lath, the

vbuttons are not only reinforced and strongly joined to the body or base 1() of the cementitious substance, and all the parts of the plaster lath, including the face sheets 11 and 12 and the body 10, are not only strongly a goed and.

lioined together by the embedding of the tongues 18 in the buttons 25, but the buttons are so formed that an equally strong hond is made with the applied superimposed plaster.

Having described a preferred form of our invention, we claim: l

1. In a plaster lath, a perforated facing sheet having surface depressions and apertures therethrough in the bottoms of the depressions, and having reinforcing tongues extending outwardly from the bottoms ofwith the facing sheet and formed of the ma.-

terial struck out of the facing sheet to forni the apertures, and a cementitious base back of the facing sheet projecting through the apertures to form protrusions extending into the depressions and about the reinforcing tongues.

1n witness that we claim the foregoing we have hereunto subscribed our names this 17th and 18th vdays of June, 1915, respectively.

HENRY LA CASSE. JAMES P. SEXTON.

Witnesses c NABDA VVooLLEN, J AMES T. BARKELEW, ELWooD H. BARKELEW. 

